CN111006072A - Hot rod type pipe support with self-compensation stress-reduction efficient heat insulation pipe support - Google Patents
Hot rod type pipe support with self-compensation stress-reduction efficient heat insulation pipe support Download PDFInfo
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- CN111006072A CN111006072A CN201911175899.XA CN201911175899A CN111006072A CN 111006072 A CN111006072 A CN 111006072A CN 201911175899 A CN201911175899 A CN 201911175899A CN 111006072 A CN111006072 A CN 111006072A
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- pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing
- F16L3/1091—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing with two members, the two members being fixed to each other with fastening members on each side
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/12—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies
- F16L59/135—Hangers or supports specially adapted for insulated pipes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses a hot rod type pipe frame with a self-compensation stress-reduction efficient heat insulation pipe support, which comprises at least 2 pressure-bearing supporting pipes fixed in a foundation, wherein a supporting cross beam is arranged at the top ends of the pressure-bearing supporting pipes, and the pipe support is arranged on the supporting cross beam and used for supporting a pipeline; the pipe bracket comprises a heat insulation layer, a moisture-proof protective layer and a metal rain-proof protective layer from inside to outside in sequence, and a reinforcing pipe clamp is arranged on the outer side of the metal rain-proof protective layer; the heat insulation layer is formed by overlapping an upper heat insulation block and a lower heat insulation block in a staggered way, and a labyrinth seal elastic cushion is filled in a gap formed by overlapping the two heat insulation blocks in the staggered way; the bottom of the pipe bracket is provided with a pipe bracket base which is arranged on a self-compensation stress-reducing friction pair fixed by a supporting beam; and a side sliding stop block is arranged on the supporting cross beam between the pipe bracket positioned at the outer side and the pressure-bearing supporting pipe. The invention can realize low-friction sliding in the horizontal direction and compensate angular displacement of the pipeline in any direction, has strong bearing performance and low friction stress reduction, and simultaneously limits the lateral displacement of the heat insulation support.
Description
Technical Field
The invention relates to a hot rod type pipe frame with a self-compensation stress-reduction efficient heat insulation pipe support, in particular to a device capable of eliminating deformation and damage of medium pipelines such as oil and gas pipelines and foundations due to large-scale temperature rise.
Background
With the deepening of the socialization process, the usage amount of fossil fuels is increased year by people, petroleum and natural gas pipeline engineering frequently goes up, more and more pipelines are developed in cold regions, and pipe frames for supporting the pipelines are generally buried on permafrost foundations, such as a Zhongrussian crude oil pipeline project, an American Alaska natural gas pipeline project, a Russian arctic circle Wankel oil field project and the like. In order to prevent the damage of secondary approach construction to the fragile frozen soil environment, the erection of 2 or even more pipelines on the pipe frame is a trend of pipeline engineering development. In summer, as the pipe frame is supported in a permafrost layer, the ground of the permafrost layer is influenced by the long-time radiation heat of the sun to melt and deform, and the pipe frame can be influenced destructively and even collapse; in high-altitude and high-latitude frozen soil areas, the construction difficulty is high due to climate reasons, the pipeline engineering is usually built in multiple stages, and the pressure of the pipe frame on the frozen soil layer changes in the early stage and the later stage, so that the inclination of the pipe frame can be caused. Therefore, the pipe frame in the frozen soil area at high altitude and high latitude should consider thermal expansion and cold contraction, the foundation melts and causes settlement deformation, torsional deformation and the like when in design, so as to prevent the inclination risk.
The small deformation of the pipeline can not immediately damage the conveying pipeline, but if the pipeline is influenced by the lifting and the inclination of the pipe frame caused by the expansion caused by heat and the contraction caused by cold of the foundation for a long time, the pipeline is easy to generate metal fatigue, and the service life of the conveying pipeline is influenced. In addition, if the temperature of the foundation is excessively increased, the deformation of the foundation often exceeds the compensation allowance of the pipe frame, so that the pipeline generates deformation stress, and the damage process of the pipeline is accelerated. Therefore, overcoming foundation deformation is an effective means for solving the problem of safe long-term operation of the pipe frame.
Disclosure of Invention
The invention aims to provide a hot rod type pipe frame with a self-compensating stress-reducing efficient heat insulation pipe support, aiming at the problem that the existing pipe frame of a fluid conveying pipeline is easy to deform along with the foundation, and the pipe frame with a plurality of (at least 2) pipes is damaged due to uneven settlement deformation or torsional deformation.
The purpose of the invention is realized by the following technical scheme:
a hot rod type pipe support with a self-compensating stress-reducing high-efficiency heat-insulating pipe support comprises at least 2 pressure-bearing supporting pipes 7, the lower ends of which are fixed in a foundation, wherein the hot rods 1, one ends of which extend into the frozen soil foundation, are arranged; a supporting beam 4 is arranged at the top end of the pressure bearing supporting pipe 7, and the supporting beam 4 is positioned below the pipeline; the pipe bracket 2 is arranged on the supporting beam 4 and used for supporting a pipeline 10; the pipe bracket 2 sequentially comprises a high-strength low-heat-conduction heat insulation layer 25, a moisture-proof protection layer 24 and a metal rain-proof protection layer 23 from inside to outside, and a reinforcing pipe clamp 21 is arranged on the outer side of the metal rain-proof protection layer 23; the heat insulation layer 25 is formed by overlapping an upper heat insulation block and a lower heat insulation block in a staggered manner, and a labyrinth seal elastic cushion 26 is filled in a gap formed by overlapping the upper heat insulation block and the lower heat insulation block in a staggered manner to isolate the heat of the pipeline from dissipating from the gap; the bottom of the pipe bracket 2 is provided with a pipe bracket base 27, and the pipe bracket base 27 is arranged on a self-compensation stress-reducing friction pair 28 fixed by the supporting beam 4; a lateral slide block 3 is arranged on a supporting beam 4 between the pipe bracket 2 positioned at the outer side and a pressure-bearing supporting pipe 6 to limit the lateral displacement of the pipe bracket.
The hot rod extends into the permafrost soil to be not less than 2.0m, and is determined according to the upper limit of the permafrost soil. The outer wall of the part of the hot rod 1 inserted into the foundation is provided with an anticorrosive coating, preferably a galvanized anticorrosive coating.
Heat tracing pipes 9 are respectively arranged along the top, the left side and the right side of the outer wall of the pipeline 10.
As the preferable technical scheme of the hot rod type pipe frame with the self-compensation stress-reduction efficient heat insulation pipe bracket, at least 2 limiting rings 11 are placed in the pressure-bearing supporting pipe 7, and at least 3 supporting rods 12 are arranged on the outer wall of each limiting ring 11 to fix the limiting rings 11 on the inner wall of the pressure-bearing supporting pipe 7. For the convenience of assembly, the inner diameter of the limiting ring is larger than the outer diameter of the hot rod, preferably 10mm larger than the outer diameter of the hot rod, the limiting ring 11 is sleeved on the outer wall of the hot rod 1, the position of the hot rod is fixed through the limiting ring and the supporting rod, and the verticality of the hot rod is controlled to meet the design requirements of national standards.
Preferably, the support rod is respectively connected with the outer wall of the limit ring 11 and the inner wall of the pressure-bearing support pipe 7 into a whole through welding.
Preferably, 3 or 4 support rods 12 are arranged on the outer wall of each limit ring 11.
Preferably, the supporting beam 4 has an H-shaped section or a ] [ shaped section, and is preferably H-shaped steel, i-shaped steel or C-shaped steel.
Preferably, two sides of the upper part of the pressure-bearing supporting pipe 7 are respectively provided with 1 inverted-L-shaped supporting part 6, a vertical plate of each supporting part 6 is welded on the outer wall of the pressure-bearing supporting pipe 7, and a cross beam of each supporting part 6 is provided with a bolt hole; the cross beam of the supporting piece 6 is connected with the supporting cross beam 4 in a bolt riveting mode through the anti-loosening connecting piece 5.
The anti-loosening connecting piece is a double-nut anti-loosening connecting piece and consists of a bolt and a double nut.
As the preferable technical scheme of the heat rod type pipe frame with the self-compensating stress-reducing high-efficiency heat insulation pipe bracket, the pressure-bearing supporting pipe 7 is connected with the supporting cross beam 4 through the inclined supporting beam 8 so as to improve the structural stability of the pipe frame. The upper end of the inclined supporting beam 8 is connected with the supporting beam 4 through an anti-loosening connecting piece, and the lower end of the inclined supporting beam is welded with the pressure-bearing supporting tube 7.
The number of the pressure-bearing supporting pipes 7 can be more than 2 and 3. When the number of the pressure-bearing support pipes is 2, the 2 pressure-bearing support pipes 7 are positioned at two sides of the pipeline 10; when the number of the pressure-bearing supporting pipes is more than 3, 2 pressure-bearing supporting pipes 7 are positioned at two sides of the pipeline 10, and the rest pressure-bearing supporting pipes 7 are positioned below the middle part of the supporting beam, if the permafrost is of a high-temperature high-ice-content type, at least 1 hot rod needs to be arranged in each pressure-bearing supporting pipe, so that the stability of the permafrost foundation is ensured; if the permafrost is stable at low temperature, the hot rod is not needed.
The reinforcing pipe clamp 21 is tightly hooped by a self-tightening type anti-loose fastener 22, and the self-tightening type anti-loose fastener 22 is a combination of a bolt, a nut and a disc spring group.
The heat insulation block is formed by foaming, cutting and molding polyurethane PU or polyisocyanurate PIR, a heat tracing pipe channel is reserved in the heat insulation block for installing a heat tracing pipe, and the upper half and the lower half are formed by adopting a numerical control integrated labyrinth, so that the heat tracing pipe is convenient for on-site quick lap joint installation. Preferably, one end of each heat insulation block is protruded, the other end of each heat insulation block is recessed, and the heat insulation layer 25 is formed by overlapping concave-convex structures of the upper heat insulation block and the lower heat insulation block in a staggered mode.
When the total thickness of heat insulation layer 25 is more than 80mm, assemble the convenience when in order to the site operation, reduce the heat loss because of expend with heat and contract with cold simultaneously, heat insulation layer 25 multilayer concatenation make heat insulation layer 25's axial terminal surface be the step-like.
The labyrinth seal elastic pad 26 is made of a heat insulating material, preferably bridged polyethylene, superfine glass fiber felt, nano aerogel felt and the like.
The moisture-proof protective layer 24 is formed by wrapping a composite PAP aluminum foil outside the heat insulation layer.
The material of the metal rain-proof protective layer 23 is an aluminum-plated steel plate, a stainless steel plate, a galvanized steel plate.
The side slip blocks 3 are welded to the support beams 4.
The self-compensating stress-reducing friction pair 28 is a spherical friction pair, and comprises a stainless steel mirror panel fixed with the pipe bracket bottom plate 27, a polytetrafluoroethylene plate, a convex spherical fluorine-lined upper friction pair and a concave spherical fluorine-lined lower friction pair welded or bolted with the supporting beam 4; the self-compensation stress-reducing friction pair 28 can realize low-friction sliding in the horizontal direction and compensation of angular displacement of the pipeline in any direction, and has strong bearing performance. Meanwhile, one pipeline is provided with two fixed points and a pi bend, the fixed points bear the resultant force of the expansion elastic force of the pipeline and the horizontal friction force of each support, and the horizontal friction force of each support can be reduced by adopting a self-compensation stress-reducing friction pair, so that the stress on the fixed points is reduced, the stress of the whole piping system is reduced, and the safety is improved.
The invention has the beneficial effects that:
the hot rod type pipe support with the self-compensating stress-reducing efficient heat insulation pipe support has the advantages of simple structure, strong applicability and convenient installation, can thoroughly eliminate the damage to the pipeline caused by settlement or rotation deformation caused by foundation deformation, can be popularized and operated to support various pipelines in a cold frozen soil area, and is particularly suitable for pipeline engineering constructed in cold regions to simultaneously support more than 2 pipelines. The high-altitude heat-insulation pipe support is used for pipelines in industries such as petrochemical industry in high-altitude and high-latitude frozen soil areas, the temperature of a foundation can be reduced, the stability of the support is guaranteed, the pipelines are allowed to generate angular displacement and linear displacement within a certain range, and the high-efficiency heat-insulation pipe support can be always effectively supported, so that damage to the pipelines due to deformation is reduced or avoided.
Drawings
FIG. 1 is a schematic structural diagram of a hot rod type pipe rack with a self-compensating stress-reducing high-efficiency heat-insulating pipe bracket of the invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic view of the installation of the stop collar;
FIG. 4 is a schematic structural view of a pipe bracket;
fig. 5 is a schematic view of the structure of the adiabatic block.
In the figure, 1-heat bar, 2-pipe bracket, 3-sideslip block, 4-beam, 5-anti-loose connecting piece, 6-supporting piece, 7-bearing supporting pipe, 8-inclined supporting beam, 9-heat tracing pipe, 10-pipeline, 11-spacing ring, 12-supporting rod, 21-reinforcing pipe clamp, 22-self-tightening anti-loose fastener, 23-metal rain-proof protective layer, 24-moisture-proof protective layer, 25-heat insulating layer, 26-labyrinth seal elastic pad, 27-pipe bracket base and 28-self-compensation stress reduction friction pair.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings and the detailed implementation mode.
Example 1
As shown in fig. 1-5, a heat bar type pipe frame with a self-compensating stress-reducing high-efficiency heat insulation pipe support comprises 2 pressure-bearing support pipes 7 with lower ends fixed in a foundation, wherein the pressure-bearing support pipes 7 are positioned at two sides of a pipeline 10, 2 limit rings 11 are arranged in the pressure-bearing support pipes 7, 4 support rods 12 are welded between the outer walls of the limit rings 11 and the inner walls of the pressure-bearing support pipes 7, the inner diameters of the limit rings are 10mm larger than the outer diameter of a heat bar 1, the heat bar 1 is inserted into the pressure-bearing support pipes 7 and is merged into the ground, and the position of the heat bar is fixed through the; two sides of the upper part of the pressure-bearing supporting pipe 7 are respectively provided with 1 inverted L-shaped supporting part 6, a vertical plate of each supporting part 6 is welded on the outer wall of the pressure-bearing supporting pipe 7, a cross beam of each supporting part 6 is provided with a bolt hole, and the cross beam of each supporting part 6 is connected with a flange of the H-shaped supporting cross beam 4 in a bolt riveting mode through an anti-loosening connecting part 5; the supporting beam 4 is positioned below the pipeline, and the pipe bracket 2 is arranged on the supporting beam 4 and used for supporting the pipeline 10; the pipe bracket 2 sequentially comprises a high-strength low-heat-conduction heat insulation layer 25, a moisture-proof protection layer 24 and a metal rainproof protection layer 23 from inside to outside, a reinforcing pipe clamp 21 is arranged on the outer side of the metal rainproof protection layer 23, and the reinforcing pipe clamp 21 is tightly hooped through a self-tightening type anti-loosening fastener 22; the heat insulation layer 25 is formed by staggered overlapping of concave-convex structures of an upper heat insulation block and a lower heat insulation block (figure 5), and a labyrinth seal elastic cushion 26 is filled in a gap formed by the staggered overlapping of the two heat insulation blocks; the bottom of the pipe bracket 2 is provided with a pipe bracket base 27, and the pipe bracket base 27 is arranged on a self-compensation stress-reducing friction pair 28 fixed by the supporting beam 4; side sliding stoppers 3 are respectively welded on the supporting cross beams 4 between the left pipe bracket 2 and the left pressure-bearing supporting pipe 6 and between the right pipe bracket 2 and the right pressure-bearing supporting pipe 6 to limit the lateral displacement of the pipe brackets.
The supporting beam is made of H steel.
The anti-loose connecting piece 5 is a double-nut anti-loose fastener and comprises a bolt and double nuts. The self-tightening anti-loose fastener 22 is a combination of a bolt, a nut and a disc spring group.
The heat insulation block is formed by foaming, cutting and molding Polyurethane (PU) or Polyisocyanurate (PIR), a heat tracing pipe channel is reserved in the heat insulation block for installing a heat tracing pipe, the upper half and the lower half are formed by adopting a numerical control integrated labyrinth, and the outer side of one end of the heat insulation block is protruded and the outer side of the other end of the heat insulation block is recessed, so that the heat insulation block can be conveniently and rapidly installed in a lap joint manner.
The labyrinth seal elastic cushion 26 is made of bridging polyethylene, superfine glass fiber felt or nanometer aerogel felt and the like.
The moisture-proof protective layer 24 is formed by wrapping a composite PAP aluminum foil outside the heat insulation layer.
The material of the metal rain-proof protective layer 23 is an aluminum-plated steel plate, a stainless steel plate or a galvanized steel plate.
Example 2
On the basis of the hot rod type pipe support with the self-compensating stress-reducing high-efficiency heat insulation pipe support in the embodiment 1, an inclined support beam 8 is arranged between a pressure-bearing support pipe 7 and a support cross beam 4 to improve the structural stability of the pipe support, the upper end of the inclined support beam 8 is connected with the support cross beam 4 through an anti-loosening connecting piece, and the lower end of the inclined support beam is welded with the pressure-bearing support pipe 7.
Claims (10)
1. A hot rod type pipe support with a self-compensating stress-reducing high-efficiency heat-insulating pipe support is characterized by comprising at least 2 pressure-bearing supporting pipes fixed in a foundation, wherein a hot rod with one end extending into a permafrost foundation is installed in each pressure-bearing supporting pipe; a supporting beam is arranged at the top end of the pressure-bearing supporting pipe and is positioned below the pipeline; the supporting beam is provided with a pipe bracket for supporting a pipeline; the pipe bracket comprises a heat insulation layer, a moisture-proof protective layer and a metal rain-proof protective layer from inside to outside in sequence, and a reinforcing pipe clamp is arranged on the outer side of the metal rain-proof protective layer; the heat insulation layer is formed by overlapping two heat insulation blocks in a staggered way, and a labyrinth seal elastic cushion is filled in a gap formed by overlapping the two heat insulation blocks in the staggered way; the bottom of the pipe bracket is provided with a pipe bracket base which is arranged on a self-compensating stress-reducing friction pair fixed by a supporting beam; and a lateral sliding stop block is arranged on a supporting cross beam between the pipe bracket positioned on the outer side and the pressure-bearing supporting pipe to limit the lateral displacement of the pipe bracket.
2. The hot rod type pipe support with the self-compensating stress-reducing efficient heat insulation pipe bracket according to claim 1, wherein at least 2 limiting rings are arranged in the pressure-bearing supporting pipe, the limiting rings are sleeved on the outer wall of the hot rod, and at least 3 supporting rods are arranged on the outer wall of each limiting ring to fix the limiting rings on the inner wall of the pressure-bearing supporting pipe.
3. The hot rod pipe support with the self-compensating stress-reducing efficient heat insulation pipe bracket according to claim 2, wherein the inner diameter of the limiting ring is larger than the outer diameter of the hot rod.
4. The hot rod pipe rack with the self-compensating stress-reducing high-efficiency heat insulation pipe bracket according to claim 1, wherein the supporting cross beam is in an H-shaped section or a ] [ type section.
5. The hot rod type pipe support with the self-compensating stress-reducing efficient heat insulation pipe bracket according to claim 1, is characterized in that inverted L-shaped supporting parts are respectively arranged on two sides of the upper part of the pressure-bearing supporting pipe, and vertical plates of the supporting parts are welded on the outer wall of the pressure-bearing supporting pipe; the cross beam of the supporting piece is connected with the supporting cross beam through the anti-loosening connecting piece.
6. The heat rod type pipe frame with the self-compensating stress-reducing high-efficiency heat insulation pipe bracket according to claim 1, wherein the pressure-bearing supporting pipe is connected with the supporting cross beam through an inclined supporting beam.
7. The heat rod type pipe frame with the self-compensating stress-reducing efficient heat insulation pipe bracket according to claim 1, wherein the heat insulation block is formed by foaming and cutting Polyurethane (PU) or Polyisocyanurate (PIR), a heat tracing pipe channel is reserved in the heat insulation block for installing a heat tracing pipe, the outer side of one end of the heat insulation block is protruded, the outer side of one end of the heat insulation block is recessed, and the heat insulation block is formed by overlapping concave-convex structures of the upper heat insulation block and the lower heat insulation block in a staggered joint mode.
8. The hot rod pipe support with self-compensating stress-reducing high-efficiency heat insulation pipe bracket according to claim 1, wherein the axial end surface of the heat insulation layer is step-shaped.
9. The heat rod type pipe frame with the self-compensating stress-reducing high-efficiency heat insulation pipe bracket according to claim 1, wherein the labyrinth seal elastic cushion is made of bridging polyethylene, superfine glass fiber felt and nano aerogel felt; the moisture-proof protective layer is formed by wrapping a composite PAP aluminum foil outside the heat insulation layer; the material of the metal rainproof protective layer is an aluminum-plated steel plate, a stainless steel plate and a galvanized steel plate.
10. The hot rod type pipe frame with the self-compensation stress-reduction efficient heat insulation pipe bracket according to claim 1, wherein the self-compensation stress-reduction friction pair is a spherical friction pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911175899.XA CN111006072A (en) | 2019-11-26 | 2019-11-26 | Hot rod type pipe support with self-compensation stress-reduction efficient heat insulation pipe support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911175899.XA CN111006072A (en) | 2019-11-26 | 2019-11-26 | Hot rod type pipe support with self-compensation stress-reduction efficient heat insulation pipe support |
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| CN111006072A true CN111006072A (en) | 2020-04-14 |
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| CN201911175899.XA Pending CN111006072A (en) | 2019-11-26 | 2019-11-26 | Hot rod type pipe support with self-compensation stress-reduction efficient heat insulation pipe support |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111473157A (en) * | 2020-04-23 | 2020-07-31 | 中国科学院西北生态环境资源研究院 | Oil and gas pipeline engineering ground erection construction method in frozen soil area and at low temperature |
| CN111832190A (en) * | 2020-07-28 | 2020-10-27 | 中国石油天然气集团有限公司 | Installation design method of oil pipeline in high and cold frozen soil region |
-
2019
- 2019-11-26 CN CN201911175899.XA patent/CN111006072A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111473157A (en) * | 2020-04-23 | 2020-07-31 | 中国科学院西北生态环境资源研究院 | Oil and gas pipeline engineering ground erection construction method in frozen soil area and at low temperature |
| CN111832190A (en) * | 2020-07-28 | 2020-10-27 | 中国石油天然气集团有限公司 | Installation design method of oil pipeline in high and cold frozen soil region |
| CN111832190B (en) * | 2020-07-28 | 2024-06-07 | 中国石油天然气集团有限公司 | Installation design method for oil pipeline in high-cold frozen soil area |
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